Electrical rosette.



PATENTED FEB. 13, 1906.

J. A. MEBANB. ELECTRICAL ROSETTE.

APPLICATION FILED APR. 30, 1904.

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/ WITNESSES.

I '1 r fl ATTORNEYS UNTTED STATES PATENT @FFTQE. JAMES A. MEBANE, OFSOUTH BOsToN. VIRGINIA.

ELECTRICAL ROSETTE.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed April 30, 1904. Serial No. 205,730.

To all whom it may concern/.-

Be it known that I, JAMEs A. MEBANE, a citizen of the United States,residing at South Boston, in the county of Halifax-and State ofVirginia, have made certain new and use ful Improvements in ElectricalRosettes, of which the following is a specification.

My invention is an improvement in that class of devices commonlydesignated as rosettes or ceiling-blocks, the same being provided withmcans for connecting electrical circuits and also with safety-fuse wireseX- tending between the respective attachments with which the line-wiresand the lamp-wires are duly connected.

The invention is embodied in the construc-- tion, arrangement, andcomblnatlon of parts hereinafter described, and illustrated in theaccompanying drawings, in which Figure 1 is a side view of my improvedrosette as arranged in position for use. Fig. 2 is a perspectiveview ofthe base portion with the line-wires attached. Fig. 3 is a plan view ofthecap inverted. Fig. 4 is a perspective view ofone of the base-clampsfor the line wires and one of the connections secured to the cap. Fig. 5is atransverse section of the base. Fig. 6 is a plan view of the metalstrip from which one of the devices or clamps for attachment of wires isconstructed. Fig. 7 is a perspective view of such device in the expandedform. Fig. 8 is an end view of the same when compressed before or afterattachment of the lamp-wires.

A and B indicate, respectively, the base and cap of my improved rosette,C C the linewires connected therewith, and D D the lamp-wires, which areattached to the cap in the usual way. As shown in Figs. 2, 4, and 5, themeans for attachment of the line-wires to the base A are spring-clampsE, whose construction is 'as follows: As shown best in Fig. 4, they areeach formed of a narrow strip of spring-metal, which is bowed and itsends slotted. One of said ends is provided with a tongue 6, (seeespecially Figs. 2 and 5,) which when the two ends of the clamp E areapproxi mated enters the slot 6 in the opposite aw. A line-Wire isinserted between the jaw hav ing the slot 6 and the hook a, formed asdescribed, and since the jaws of the clamp tend to separate it isapparent that the line-wire is held firmly clamped against the lowerjaw. It will be seen that the hook e is curved Sllfliciently to adapt itto clasp around or embrace the wire in such manner that the lattercannot escape: laterally save when the spring jaws of clamp E arecompressed and brought together. The clamps E are secured in recesses inthe base A by means of brass rivets F, which are shown in Fig. 5. Theheads of the rivets are countersunk in the base A, and the cavitiesabove them are filled with plaster or war, as usual in such cases. Thebase itself is secured to the ceiling by means of screws in the usualway. As shown in Fig. 2, a curved partition G is arranged between theclamps Ethat is to say, the under side of the base A has two recesseswhich are separated from each other by the said partition, whose outeredge is flush with the hollow bearing surface of the base. One of theclamps E projects into one of the said recesses and the other clamp intothe adjacent recess; The cap B (see Fig. 3) is provided withcorresponding recesses, which are separated by a curved partition G, thesame being flush with the bearing-surface of the cap. Consequently whenthe cap is placed in due position on the base, the two partitions G andG coincide and lie in contact, thus insulating from each other the wireconnections and preventing formation of an arc when a current of highvoltage is employed.

The wire connections H and I, which are attached to the cap B, areconstructed as follows: The connection H, which is illustrated in Figs.7 and 8, is formed of a narrow metal strip, (see Fig. 6,) the ends 7L ofthe same being reduced in width and the body portion provided adjacentlywith notches h. The said strip is bent into the form represented in Fig.7, the central portion of it being so shaped as to form a dovetail andthe remaining portions being curved in S-form. The dovetail portion isinserted in a corresponding slot or notch in the cap B and lies entirelybelow the plane of the partition G. The connection H may be secured byfriction; but I prefer to provide it with a lip or claw H, (see Fig. 7,)which may be bent down into the body of the cap. The connection H mayalso be secured by simply indenting it or forcing a portion into therecess or cavity in the cap. The lamp-wires D are attached as follows:They pass between the first two convolutions and are then laid in thenotches h in the form of the letter S, and their end por-' tions passdown between the clamps h, formed by the reduced ends of the connectionH..

firmly when placed in position, as shown in Fig. 8, whereby the wiresare held securely.

This wire connection is very quickly made, and the wire is not injured,as is frequently the case when screws are employed. It is apparent thatthe wires may be quickly disconnected by taking hold of end of wire andpulling from under the spring convolutions. The connections H and I areelectrically-connected by fuses, (see Fig. 3,) which pass intermediatelyaround bridges J, which are formed integrally with the cap B orotherwise suitably constructed. The connections I are formed as to theirbody portions similarly to the connections H already describedthat is tosay, the body portion has a dovetail form, and on one side it isprovided with convolutions and notches. One end of the fuse-wise isattached to the connections I by means of these convolutions and notchesin the same manner as the wires D are attached to the connections H'thatis to say, the fusewires are carried in between the first convolutions,then throu h the notches, and their ends confined by tIie outer portion11. (See Fig. 4.) On the opposite side the connection I is provided witha spring-tongue i (See Fig. 4:.) This tongue, as there shown, engages aclamp E, to which the line-wires C are connected. As shown in Fig. 3,the two connections I are arranged on opposite sides of the partition G,and the tongues or prongs 2" project in opposite directions; but, asshown in Fig. 6, the tongues i stand above the plane of the cap B. Itwill be understood that when the cap is placed against the base, asshown in Figs. 1 and 6, and then ro tated slightly to the right thetongues or prongs i will engage the respective line-wire clamps E andfirmly lock therewith. By this means the connections between the cap Band the base A are made without the aid of screws or any devices whichrequire special manipulation.

By means of the construction, arrangement, and attachment of partshereinbefore described I effect an electrical connection between the twomain lines without the aid of a screw.

It will be understood that the base A and cap B will be made ofporcelain or some other suitable and equivalent material.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. In an electrical rosette, the combination, with the cap, and a metalwire connection formed of spring sheet metal and having its end portionsconstructed in S-shape and provided with notches, of wires which pass upthrough the cap proper and between the convolutions of the saidconnections and through the notches of the same, whereby they are dulyheld, substantially as described 2. The rosette-cap provided with arecess and a wire connection whose body portion is secured in saidrecess and whose end portions are folded or bent upon each other in Sshape and constructed with notches as and for the purpose specified.

.' JAMES A. MEBANE.

Witnesses:

J. J. LAwsoN, R. V. WATKINS.

